Earlier quoted context omitted.
HN commenters love to talk about how Raspberry Pi and Arduino boards aren't suitable for use in production hardware. I recently had a chance to wander around one of the bigger EMS factories in the Bay Area, rubbernecking at everybody else's products in various stages of assembly. It's safe to say not many naysaying HN'ers have done that recently, or they would be saying something very different.
The comment I was replying to was talking about DEATHS being caused by failure, not environmental sensors. I have nothing against its use.
One of the RasPi-based devices I saw being assembled was actually some kind of medical device that will presumably have to be FDA-certified. It was going into a very nice enclosure, with top-grade plastics and other materials, and they were building a (literal) ton of them. In principle I'm sure that can be done successfully, but I have to wonder if it'll really save the company that much time or money.